81 #define STATIC_KEY_CHECK_USE(key) WARN(!static_key_initialized,		      \  argument
83 				    __func__, (key))
125 	long key;	// key may be far away from the core kernel under KASLR  member
140 	long offset = entry->key & ~3L;  in jump_entry_key()
142 	return (struct static_key *)((unsigned long)&entry->key + offset);  in jump_entry_key()
159 	return (struct static_key *)((unsigned long)entry->key & ~3UL);  in jump_entry_key()
166 	return (unsigned long)entry->key & 1UL;  in jump_entry_is_branch()
171 	return (unsigned long)entry->key & 2UL;  in jump_entry_is_init()
176 	entry->key |= 2;  in jump_entry_set_init()
198 static __always_inline bool static_key_false(struct static_key *key)  in static_key_false()  argument
200 	return arch_static_branch(key, false);  in static_key_false()
203 static __always_inline bool static_key_true(struct static_key *key)  in static_key_true()  argument
205 	return !arch_static_branch(key, true);  in static_key_true()
222 extern void static_key_slow_inc(struct static_key *key);
223 extern void static_key_slow_dec(struct static_key *key);
224 extern void static_key_slow_inc_cpuslocked(struct static_key *key);
225 extern void static_key_slow_dec_cpuslocked(struct static_key *key);
227 extern int static_key_count(struct static_key *key);
228 extern void static_key_enable(struct static_key *key);
229 extern void static_key_disable(struct static_key *key);
230 extern void static_key_enable_cpuslocked(struct static_key *key);
231 extern void static_key_disable_cpuslocked(struct static_key *key);
252 static inline int static_key_count(struct static_key *key)  in static_key_count()  argument
254 	return atomic_read(&key->enabled);  in static_key_count()
262 static __always_inline bool static_key_false(struct static_key *key)  in static_key_false()  argument
264 	if (unlikely(static_key_count(key) > 0))  in static_key_false()
269 static __always_inline bool static_key_true(struct static_key *key)  in static_key_true()  argument
271 	if (likely(static_key_count(key) > 0))  in static_key_true()
276 static inline void static_key_slow_inc(struct static_key *key)  in static_key_slow_inc()  argument
278 	STATIC_KEY_CHECK_USE(key);  in static_key_slow_inc()
279 	atomic_inc(&key->enabled);  in static_key_slow_inc()
282 static inline void static_key_slow_dec(struct static_key *key)  in static_key_slow_dec()  argument
284 	STATIC_KEY_CHECK_USE(key);  in static_key_slow_dec()
285 	atomic_dec(&key->enabled);  in static_key_slow_dec()
288 #define static_key_slow_inc_cpuslocked(key) static_key_slow_inc(key)  argument
289 #define static_key_slow_dec_cpuslocked(key) static_key_slow_dec(key)  argument
304 static inline void static_key_enable(struct static_key *key)  in static_key_enable()  argument
306 	STATIC_KEY_CHECK_USE(key);  in static_key_enable()
308 	if (atomic_read(&key->enabled) != 0) {  in static_key_enable()
309 		WARN_ON_ONCE(atomic_read(&key->enabled) != 1);  in static_key_enable()
312 	atomic_set(&key->enabled, 1);  in static_key_enable()
315 static inline void static_key_disable(struct static_key *key)  in static_key_disable()  argument
317 	STATIC_KEY_CHECK_USE(key);  in static_key_disable()
319 	if (atomic_read(&key->enabled) != 1) {  in static_key_disable()
320 		WARN_ON_ONCE(atomic_read(&key->enabled) != 0);  in static_key_disable()
323 	atomic_set(&key->enabled, 0);  in static_key_disable()
347 	struct static_key key;  member
351 	struct static_key key;  member
354 #define STATIC_KEY_TRUE_INIT  (struct static_key_true) { .key = STATIC_KEY_INIT_TRUE,  }
355 #define STATIC_KEY_FALSE_INIT (struct static_key_false){ .key = STATIC_KEY_INIT_FALSE, }
458 		branch = !arch_static_branch(&(x)->key, true);			\
460 		branch = !arch_static_branch_jump(&(x)->key, true);		\
470 		branch = arch_static_branch_jump(&(x)->key, false);		\
472 		branch = arch_static_branch(&(x)->key, false);			\
480 #define static_branch_likely(x)		likely(static_key_enabled(&(x)->key))
481 #define static_branch_unlikely(x)	unlikely(static_key_enabled(&(x)->key))
489 #define static_branch_inc(x)		static_key_slow_inc(&(x)->key)
490 #define static_branch_dec(x)		static_key_slow_dec(&(x)->key)
491 #define static_branch_inc_cpuslocked(x)	static_key_slow_inc_cpuslocked(&(x)->key)
492 #define static_branch_dec_cpuslocked(x)	static_key_slow_dec_cpuslocked(&(x)->key)
498 #define static_branch_enable(x)			static_key_enable(&(x)->key)
499 #define static_branch_disable(x)		static_key_disable(&(x)->key)
500 #define static_branch_enable_cpuslocked(x)	static_key_enable_cpuslocked(&(x)->key)
501 #define static_branch_disable_cpuslocked(x)	static_key_disable_cpuslocked(&(x)->key)